diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b56c3d0b..e8285b71 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.1.0-alpha.4"
+  ".": "0.1.0-alpha.5"
 }
\ No newline at end of file
diff --git a/.rubocop.yml b/.rubocop.yml
index 343956e1..f5e73346 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -202,6 +202,9 @@ Style/MethodCallWithArgsParentheses:
   Exclude:
     - "**/*.gemspec"
 
+Style/MultilineBlockChain:
+  Enabled: false
+
 # Perfectly fine.
 Style/MultipleComparison:
   Enabled: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70b23828..9ca3cfdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,28 @@
 # Changelog
 
+## 0.1.0-alpha.5 (2025-04-05)
+
+Full Changelog: [v0.1.0-alpha.4...v0.1.0-alpha.5](https://github.com/Increase/increase-ruby/compare/v0.1.0-alpha.4...v0.1.0-alpha.5)
+
+### Features
+
+* allow all valid `JSON` types to be encoded ([#26](https://github.com/Increase/increase-ruby/issues/26)) ([92760b3](https://github.com/Increase/increase-ruby/commit/92760b3aba92abca8c6b4d6550d75b94c1a8fbc2))
+* support query, header, and body params that have identical names ([#25](https://github.com/Increase/increase-ruby/issues/25)) ([def73dd](https://github.com/Increase/increase-ruby/commit/def73dd349fa2aec3074e16bdfa2a165bf4fc1e1))
+
+
+### Bug Fixes
+
+* converter should transform stringio into string where applicable ([#28](https://github.com/Increase/increase-ruby/issues/28)) ([68e4e9d](https://github.com/Increase/increase-ruby/commit/68e4e9df4a5938442eb890da6f1918f04d34e333))
+
+
+### Chores
+
+* document LSP support in read me ([#24](https://github.com/Increase/increase-ruby/issues/24)) ([778538d](https://github.com/Increase/increase-ruby/commit/778538da18c49156d45c68c9370c3628fd7e594a))
+* **internal:** version bump ([#19](https://github.com/Increase/increase-ruby/issues/19)) ([fd9e8ad](https://github.com/Increase/increase-ruby/commit/fd9e8ada315a49377dbb2aa8ec6af48a180fb651))
+* misc sdk polish ([#23](https://github.com/Increase/increase-ruby/issues/23)) ([e056d8a](https://github.com/Increase/increase-ruby/commit/e056d8a96d3da4568daf30d68f980a81c69ab5dc))
+* rename confusing `Type::BooleanModel` to `Type::Boolean` ([#27](https://github.com/Increase/increase-ruby/issues/27)) ([ae0a5ee](https://github.com/Increase/increase-ruby/commit/ae0a5ee0e1c0177ab6aa08032f29655b5412b37d))
+* simplify internal utils ([#22](https://github.com/Increase/increase-ruby/issues/22)) ([da6ec29](https://github.com/Increase/increase-ruby/commit/da6ec29d5dd5ad6bfea0f3461221f3a80259738d))
+
 ## 0.1.0-alpha.4 (2025-04-04)
 
 Full Changelog: [v0.1.0-alpha.3...v0.1.0-alpha.4](https://github.com/Increase/increase-ruby/compare/v0.1.0-alpha.3...v0.1.0-alpha.4)
diff --git a/Gemfile.lock b/Gemfile.lock
index b44278ff..d85a64f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    increase (0.1.0.pre.alpha.4)
+    increase (0.1.0.pre.alpha.5)
       connection_pool
 
 GEM
diff --git a/README.md b/README.md
index bd55470d..21134914 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "increase", "~> 0.1.0.pre.alpha.3"
+gem "increase", "~> 0.1.0.pre.alpha.4"
 ```
 
 <!-- x-release-please-end -->
@@ -140,9 +140,23 @@ increase.accounts.create(
 
 ## LSP Support
 
-### Sorbet
+### Solargraph
+
+This library includes [Solargraph](https://solargraph.org) support for both auto completion and go to definition.
+
+```ruby
+gem "solargraph", group: :development
+```
+
+After Solargraph is installed, **you must populate its index** either via the provided editor command, or by running the following in your terminal:
+
+```sh
+bundle exec solargraph gems
+```
 
-**This library emits an intentional warning under the [`tapioca` toolchain](https://github.com/Shopify/tapioca)**. This is normal, and does not impact functionality.
+Otherwise Solargraph will not be able to provide type information or auto-completion for any non-indexed libraries.
+
+### Sorbet
 
 This library is written with [Sorbet type definitions](https://sorbet.org/docs/rbi). However, there is no runtime dependency on the `sorbet-runtime`.
 
@@ -153,15 +167,21 @@ Due to limitations with the Sorbet type system, where a method otherwise can tak
 Please follow Sorbet's [setup guides](https://sorbet.org/docs/adopting) for best experience.
 
 ```ruby
-model = Increase::Models::AccountCreateParams.new(
+params = Increase::Models::AccountCreateParams.new(
   name: "New Account!",
   entity_id: "entity_n8y8tnk2p9339ti393yi",
   program_id: "program_i2v2os4mwza1oetokh9i"
 )
 
-increase.accounts.create(**model)
+increase.accounts.create(**params)
 ```
 
+Note: **This library emits an intentional warning under the [`tapioca` toolchain](https://github.com/Shopify/tapioca)**. This is normal, and does not impact functionality.
+
+### Ruby LSP
+
+The Ruby LSP has [best effort support](https://shopify.github.io/ruby-lsp/#guessed-types) for inferring type information from Ruby code, and as such it may not always be able to provide accurate type information.
+
 ## Advanced
 
 ### Making custom/undocumented requests
diff --git a/lib/increase.rb b/lib/increase.rb
index 04569a17..bb4ab646 100644
--- a/lib/increase.rb
+++ b/lib/increase.rb
@@ -39,7 +39,7 @@
 require_relative "increase/internal/util"
 require_relative "increase/internal/type/converter"
 require_relative "increase/internal/type/unknown"
-require_relative "increase/internal/type/boolean_model"
+require_relative "increase/internal/type/boolean"
 require_relative "increase/internal/type/enum"
 require_relative "increase/internal/type/union"
 require_relative "increase/internal/type/array_of"
diff --git a/lib/increase/internal/type/base_model.rb b/lib/increase/internal/type/base_model.rb
index cedae18f..d94f5736 100644
--- a/lib/increase/internal/type/base_model.rb
+++ b/lib/increase/internal/type/base_model.rb
@@ -175,7 +175,9 @@ def optional(name_sym, type_info, spec = {})
           # @param other [Object]
           #
           # @return [Boolean]
-          def ==(other) = other.is_a?(Class) && other <= Increase::Internal::Type::BaseModel && other.fields == fields
+          def ==(other)
+            other.is_a?(Class) && other <= Increase::Internal::Type::BaseModel && other.fields == fields
+          end
         end
 
         # @param other [Object]
@@ -263,6 +265,7 @@ def dump(value)
               return super
             end
 
+            is_param = singleton_class <= Increase::Internal::Type::RequestParameters::Converter
             acc = {}
 
             coerced.each do |key, val|
@@ -271,19 +274,21 @@ def dump(value)
               in nil
                 acc.store(name, super(val))
               else
-                mode, api_name, type_fn = field.fetch_values(:mode, :api_name, :type_fn)
+                mode, type_fn = field.fetch_values(:mode, :type_fn)
                 case mode
                 in :coerce
                   next
                 else
                   target = type_fn.call
+                  api_name = is_param ? name : field.fetch(:api_name)
                   acc.store(api_name, Increase::Internal::Type::Converter.dump(target, val))
                 end
               end
             end
 
-            known_fields.each_value do |field|
-              mode, api_name, const = field.fetch_values(:mode, :api_name, :const)
+            known_fields.each do |name, field|
+              mode, const = field.fetch_values(:mode, :const)
+              api_name = is_param ? name : field.fetch(:api_name)
               next if mode == :coerce || acc.key?(api_name) || const == Increase::Internal::OMIT
               acc.store(api_name, const)
             end
@@ -357,7 +362,8 @@ def initialize(data = {})
           in Hash => coerced
             @data = coerced
           else
-            raise ArgumentError.new("Expected a #{Hash} or #{Increase::Internal::Type::BaseModel}, got #{data.inspect}")
+            message = "Expected a #{Hash} or #{Increase::Internal::Type::BaseModel}, got #{data.inspect}"
+            raise ArgumentError.new(message)
           end
         end
 
@@ -365,7 +371,7 @@ def initialize(data = {})
         def inspect
           rows = self.class.known_fields.keys.map do
             "#{_1}=#{@data.key?(_1) ? public_send(_1) : ''}"
-          rescue Increase::ConversionError
+          rescue Increase::Errors::ConversionError
             "#{_1}=#{@data.fetch(_1)}"
           end
           "#<#{self.class.name}:0x#{object_id.to_s(16)} #{rows.join(' ')}>"
diff --git a/lib/increase/internal/type/boolean_model.rb b/lib/increase/internal/type/boolean.rb
similarity index 95%
rename from lib/increase/internal/type/boolean_model.rb
rename to lib/increase/internal/type/boolean.rb
index bce2ef7b..e82e636f 100644
--- a/lib/increase/internal/type/boolean_model.rb
+++ b/lib/increase/internal/type/boolean.rb
@@ -8,7 +8,7 @@ module Type
       # @abstract
       #
       # Ruby has no Boolean class; this is something for models to refer to.
-      class BooleanModel
+      class Boolean
         extend Increase::Internal::Type::Converter
 
         # @param other [Object]
@@ -19,7 +19,7 @@ def self.===(other) = other == true || other == false
         # @param other [Object]
         #
         # @return [Boolean]
-        def self.==(other) = other.is_a?(Class) && other <= Increase::Internal::Type::BooleanModel
+        def self.==(other) = other.is_a?(Class) && other <= Increase::Internal::Type::Boolean
 
         class << self
           # @api private
diff --git a/lib/increase/internal/type/converter.rb b/lib/increase/internal/type/converter.rb
index a9c08802..a0d9eec3 100644
--- a/lib/increase/internal/type/converter.rb
+++ b/lib/increase/internal/type/converter.rb
@@ -64,7 +64,7 @@ def type_info(spec)
             in Hash
               type_info(spec.slice(:const, :enum, :union).first&.last)
             in true | false
-              -> { Increase::Internal::Type::BooleanModel }
+              -> { Increase::Internal::Type::Boolean }
             in Increase::Internal::Type::Converter | Class | Symbol
               -> { spec }
             in NilClass | Integer | Float
@@ -168,6 +168,9 @@ def coerce(
                 in String | Symbol | Numeric
                   exactness[value.is_a?(Numeric) ? :maybe : :yes] += 1
                   return value.to_s
+                in StringIO
+                  exactness[:yes] += 1
+                  return value.string
                 else
                   if strictness == :strong
                     message = "no implicit conversion of #{value.class} into #{target.inspect}"
@@ -209,7 +212,9 @@ def coerce(
           #
           # @return [Object]
           def dump(target, value)
+            # rubocop:disable Layout/LineLength
             target.is_a?(Increase::Internal::Type::Converter) ? target.dump(value) : Increase::Internal::Type::Unknown.dump(value)
+            # rubocop:enable Layout/LineLength
           end
         end
       end
diff --git a/lib/increase/internal/type/enum.rb b/lib/increase/internal/type/enum.rb
index 4c0f84b9..b04af1e8 100644
--- a/lib/increase/internal/type/enum.rb
+++ b/lib/increase/internal/type/enum.rb
@@ -37,7 +37,9 @@ def ===(other) = values.include?(other)
         #
         # @return [Boolean]
         def ==(other)
+          # rubocop:disable Layout/LineLength
           other.is_a?(Module) && other.singleton_class <= Increase::Internal::Type::Enum && other.values.to_set == values.to_set
+          # rubocop:enable Layout/LineLength
         end
 
         # @api private
diff --git a/lib/increase/internal/util.rb b/lib/increase/internal/util.rb
index 2111977b..bcab7641 100644
--- a/lib/increase/internal/util.rb
+++ b/lib/increase/internal/util.rb
@@ -61,7 +61,7 @@ class << self
         # @return [Boolean]
         def primitive?(input)
           case input
-          in true | false | Integer | Float | Symbol | String
+          in true | false | Numeric | Symbol | String
             true
           else
             false
@@ -70,13 +70,11 @@ def primitive?(input)
 
         # @api private
         #
-        # @param input [Object]
+        # @param input [String, Boolean]
         #
         # @return [Boolean, Object]
         def coerce_boolean(input)
           case input.is_a?(String) ? input.downcase : input
-          in Numeric
-            input.nonzero?
           in "true"
             true
           in "false"
@@ -88,7 +86,7 @@ def coerce_boolean(input)
 
         # @api private
         #
-        # @param input [Object]
+        # @param input [String, Boolean]
         #
         # @raise [ArgumentError]
         # @return [Boolean, nil]
@@ -103,34 +101,20 @@ def coerce_boolean!(input)
 
         # @api private
         #
-        # @param input [Object]
+        # @param input [String, Integer]
         #
         # @return [Integer, Object]
         def coerce_integer(input)
-          case input
-          in true
-            1
-          in false
-            0
-          else
-            Integer(input, exception: false) || input
-          end
+          Integer(input, exception: false) || input
         end
 
         # @api private
         #
-        # @param input [Object]
+        # @param input [String, Integer, Float]
         #
         # @return [Float, Object]
         def coerce_float(input)
-          case input
-          in true
-            1.0
-          in false
-            0.0
-          else
-            Float(input, exception: false) || input
-          end
+          Float(input, exception: false) || input
         end
 
         # @api private
@@ -159,12 +143,7 @@ class << self
         private def deep_merge_lr(lhs, rhs, concat: false)
           case [lhs, rhs, concat]
           in [Hash, Hash, _]
-            rhs_cleaned = rhs.reject { _2 == Increase::Internal::OMIT }
-            lhs
-              .reject { |key, _| rhs[key] == Increase::Internal::OMIT }
-              .merge(rhs_cleaned) do |_, old_val, new_val|
-                deep_merge_lr(old_val, new_val, concat: concat)
-              end
+            lhs.merge(rhs) { deep_merge_lr(_2, _3, concat: concat) }
           in [Array, Array, true]
             lhs.concat(rhs)
           else
@@ -362,7 +341,7 @@ def normalized_headers(*headers)
             value =
               case val
               in Array
-                val.map { _1.to_s.strip }.join(", ")
+                val.filter_map { _1&.to_s&.strip }.join(", ")
               else
                 val&.to_s&.strip
               end
@@ -469,7 +448,7 @@ class << self
           case val
           in IO
             y << "Content-Type: application/octet-stream\r\n\r\n"
-            IO.copy_stream(val, y)
+            IO.copy_stream(val.tap(&:rewind), y)
           in StringIO
             y << "Content-Type: application/octet-stream\r\n\r\n"
             y << val.string
@@ -525,7 +504,7 @@ class << self
         def encode_content(headers, body)
           content_type = headers["content-type"]
           case [content_type, body]
-          in [%r{^application/(?:vnd\.api\+)?json}, Hash | Array]
+          in [%r{^application/(?:vnd\.api\+)?json}, _] unless body.nil?
             [headers, JSON.fast_generate(body)]
           in [%r{^application/(?:x-)?jsonl}, Enumerable]
             [headers, body.lazy.map { JSON.fast_generate(_1) }]
@@ -533,8 +512,12 @@ def encode_content(headers, body)
             boundary, strio = encode_multipart_streaming(body)
             headers = {**headers, "content-type" => "#{content_type}; boundary=#{boundary}"}
             [headers, strio]
+          in [_, IO]
+            [headers, body.tap(&:rewind)]
           in [_, StringIO]
             [headers, body.string]
+          in [_, Symbol | Numeric]
+            [headers, body.to_s]
           else
             [headers, body]
           end
@@ -673,7 +656,7 @@ def decode_lines(enum)
         #
         # @param lines [Enumerable<String>]
         #
-        # @return [Hash{Symbol=>Object}]
+        # @return [Enumerable<Hash{Symbol=>Object}>]
         def decode_sse(lines)
           # rubocop:disable Metrics/BlockLength
           chain_fused(lines) do |y|
diff --git a/lib/increase/models/account_transfer_create_params.rb b/lib/increase/models/account_transfer_create_params.rb
index 3a4ac32c..0651309c 100644
--- a/lib/increase/models/account_transfer_create_params.rb
+++ b/lib/increase/models/account_transfer_create_params.rb
@@ -37,7 +37,7 @@ class AccountTransferCreateParams < Increase::Internal::Type::BaseModel
       #   Whether the transfer requires explicit approval via the dashboard or API.
       #
       #   @return [Boolean, nil]
-      optional :require_approval, Increase::Internal::Type::BooleanModel
+      optional :require_approval, Increase::Internal::Type::Boolean
 
       # @!parse
       #   # @return [Boolean]
diff --git a/lib/increase/models/ach_transfer_create_params.rb b/lib/increase/models/ach_transfer_create_params.rb
index 02e9c1b1..580f687b 100644
--- a/lib/increase/models/ach_transfer_create_params.rb
+++ b/lib/increase/models/ach_transfer_create_params.rb
@@ -170,7 +170,7 @@ class ACHTransferCreateParams < Increase::Internal::Type::BaseModel
       #   Whether the transfer requires explicit approval via the dashboard or API.
       #
       #   @return [Boolean, nil]
-      optional :require_approval, Increase::Internal::Type::BooleanModel
+      optional :require_approval, Increase::Internal::Type::Boolean
 
       # @!parse
       #   # @return [Boolean]
diff --git a/lib/increase/models/check_transfer_create_params.rb b/lib/increase/models/check_transfer_create_params.rb
index fb61ab37..26f9dd33 100644
--- a/lib/increase/models/check_transfer_create_params.rb
+++ b/lib/increase/models/check_transfer_create_params.rb
@@ -49,7 +49,7 @@ class CheckTransferCreateParams < Increase::Internal::Type::BaseModel
       #   Whether the transfer requires explicit approval via the dashboard or API.
       #
       #   @return [Boolean, nil]
-      optional :require_approval, Increase::Internal::Type::BooleanModel
+      optional :require_approval, Increase::Internal::Type::Boolean
 
       # @!parse
       #   # @return [Boolean]
diff --git a/lib/increase/models/entity_create_beneficial_owner_params.rb b/lib/increase/models/entity_create_beneficial_owner_params.rb
index f1a75a4b..592c07a7 100644
--- a/lib/increase/models/entity_create_beneficial_owner_params.rb
+++ b/lib/increase/models/entity_create_beneficial_owner_params.rb
@@ -98,7 +98,7 @@ class Individual < Increase::Internal::Type::BaseModel
           #     Number).
           #
           #   @return [Boolean, nil]
-          optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+          optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
           # @!parse
           #   # @return [Boolean]
diff --git a/lib/increase/models/entity_create_params.rb b/lib/increase/models/entity_create_params.rb
index a2c08964..a3165401 100644
--- a/lib/increase/models/entity_create_params.rb
+++ b/lib/increase/models/entity_create_params.rb
@@ -372,7 +372,7 @@ class Individual < Increase::Internal::Type::BaseModel
             #     Number).
             #
             #   @return [Boolean, nil]
-            optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+            optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
             # @!parse
             #   # @return [Boolean]
@@ -915,7 +915,7 @@ class Individual < Increase::Internal::Type::BaseModel
           #     Number).
           #
           #   @return [Boolean, nil]
-          optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+          optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
           # @!parse
           #   # @return [Boolean]
@@ -1247,7 +1247,7 @@ class NaturalPerson < Increase::Internal::Type::BaseModel
         #     Number).
         #
         #   @return [Boolean, nil]
-        optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+        optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
         # @!parse
         #   # @return [Boolean]
@@ -1858,7 +1858,7 @@ class Individual < Increase::Internal::Type::BaseModel
             #     Number).
             #
             #   @return [Boolean, nil]
-            optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+            optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
             # @!parse
             #   # @return [Boolean]
@@ -2195,7 +2195,7 @@ class Grantor < Increase::Internal::Type::BaseModel
           #     Number).
           #
           #   @return [Boolean, nil]
-          optional :confirmed_no_us_tax_id, Increase::Internal::Type::BooleanModel
+          optional :confirmed_no_us_tax_id, Increase::Internal::Type::Boolean
 
           # @!parse
           #   # @return [Boolean]
diff --git a/lib/increase/models/physical_card_profile.rb b/lib/increase/models/physical_card_profile.rb
index f3695181..1ed8ab51 100644
--- a/lib/increase/models/physical_card_profile.rb
+++ b/lib/increase/models/physical_card_profile.rb
@@ -66,7 +66,7 @@ class PhysicalCardProfile < Increase::Internal::Type::BaseModel
       #     group.
       #
       #   @return [Boolean]
-      required :is_default, Increase::Internal::Type::BooleanModel
+      required :is_default, Increase::Internal::Type::Boolean
 
       # @!attribute status
       #   The status of the Physical Card Profile.
diff --git a/lib/increase/models/proof_of_authorization_request_submission.rb b/lib/increase/models/proof_of_authorization_request_submission.rb
index 409fcd51..3616ccbc 100644
--- a/lib/increase/models/proof_of_authorization_request_submission.rb
+++ b/lib/increase/models/proof_of_authorization_request_submission.rb
@@ -62,7 +62,7 @@ class ProofOfAuthorizationRequestSubmission < Increase::Internal::Type::BaseMode
       #   Whether the customer has been offboarded.
       #
       #   @return [Boolean, nil]
-      required :customer_has_been_offboarded, Increase::Internal::Type::BooleanModel, nil?: true
+      required :customer_has_been_offboarded, Increase::Internal::Type::Boolean, nil?: true
 
       # @!attribute idempotency_key
       #   The idempotency key you chose for this object. This value is unique across
@@ -101,23 +101,21 @@ class ProofOfAuthorizationRequestSubmission < Increase::Internal::Type::BaseMode
       #   Whether account ownership was validated via credential (for instance, Plaid).
       #
       #   @return [Boolean, nil]
-      required :validated_account_ownership_via_credential, Increase::Internal::Type::BooleanModel, nil?: true
+      required :validated_account_ownership_via_credential, Increase::Internal::Type::Boolean, nil?: true
 
       # @!attribute validated_account_ownership_with_account_statement
       #   Whether account ownership was validated with an account statement.
       #
       #   @return [Boolean, nil]
       required :validated_account_ownership_with_account_statement,
-               Increase::Internal::Type::BooleanModel,
+               Increase::Internal::Type::Boolean,
                nil?: true
 
       # @!attribute validated_account_ownership_with_microdeposit
       #   Whether account ownership was validated with microdeposit.
       #
       #   @return [Boolean, nil]
-      required :validated_account_ownership_with_microdeposit,
-               Increase::Internal::Type::BooleanModel,
-               nil?: true
+      required :validated_account_ownership_with_microdeposit, Increase::Internal::Type::Boolean, nil?: true
 
       # @!parse
       #   # Information submitted in response to a proof of authorization request. Per
diff --git a/lib/increase/models/proof_of_authorization_request_submission_create_params.rb b/lib/increase/models/proof_of_authorization_request_submission_create_params.rb
index 791b2313..c7c4f377 100644
--- a/lib/increase/models/proof_of_authorization_request_submission_create_params.rb
+++ b/lib/increase/models/proof_of_authorization_request_submission_create_params.rb
@@ -36,7 +36,7 @@ class ProofOfAuthorizationRequestSubmissionCreateParams < Increase::Internal::Ty
       #   Whether the customer has been offboarded or suspended.
       #
       #   @return [Boolean]
-      required :customer_has_been_offboarded, Increase::Internal::Type::BooleanModel
+      required :customer_has_been_offboarded, Increase::Internal::Type::Boolean
 
       # @!attribute proof_of_authorization_request_id
       #   ID of the proof of authorization request.
@@ -48,19 +48,19 @@ class ProofOfAuthorizationRequestSubmissionCreateParams < Increase::Internal::Ty
       #   Whether the account ownership was validated via credential (e.g. Plaid).
       #
       #   @return [Boolean]
-      required :validated_account_ownership_via_credential, Increase::Internal::Type::BooleanModel
+      required :validated_account_ownership_via_credential, Increase::Internal::Type::Boolean
 
       # @!attribute validated_account_ownership_with_account_statement
       #   Whether the account ownership was validated with an account statement.
       #
       #   @return [Boolean]
-      required :validated_account_ownership_with_account_statement, Increase::Internal::Type::BooleanModel
+      required :validated_account_ownership_with_account_statement, Increase::Internal::Type::Boolean
 
       # @!attribute validated_account_ownership_with_microdeposit
       #   Whether the account ownership was validated with a microdeposit.
       #
       #   @return [Boolean]
-      required :validated_account_ownership_with_microdeposit, Increase::Internal::Type::BooleanModel
+      required :validated_account_ownership_with_microdeposit, Increase::Internal::Type::Boolean
 
       # @!attribute [r] additional_evidence_file_id
       #   File containing additional evidence.
diff --git a/lib/increase/models/real_time_payments_transfer_create_params.rb b/lib/increase/models/real_time_payments_transfer_create_params.rb
index e50e4a02..48ccc0b8 100644
--- a/lib/increase/models/real_time_payments_transfer_create_params.rb
+++ b/lib/increase/models/real_time_payments_transfer_create_params.rb
@@ -81,7 +81,7 @@ class RealTimePaymentsTransferCreateParams < Increase::Internal::Type::BaseModel
       #   Whether the transfer requires explicit approval via the dashboard or API.
       #
       #   @return [Boolean, nil]
-      optional :require_approval, Increase::Internal::Type::BooleanModel
+      optional :require_approval, Increase::Internal::Type::Boolean
 
       # @!parse
       #   # @return [Boolean]
diff --git a/lib/increase/models/wire_transfer_create_params.rb b/lib/increase/models/wire_transfer_create_params.rb
index 7a899e65..578045f1 100644
--- a/lib/increase/models/wire_transfer_create_params.rb
+++ b/lib/increase/models/wire_transfer_create_params.rb
@@ -131,7 +131,7 @@ class WireTransferCreateParams < Increase::Internal::Type::BaseModel
       #   Whether the transfer requires explicit approval via the dashboard or API.
       #
       #   @return [Boolean, nil]
-      optional :require_approval, Increase::Internal::Type::BooleanModel
+      optional :require_approval, Increase::Internal::Type::Boolean
 
       # @!parse
       #   # @return [Boolean]
diff --git a/lib/increase/version.rb b/lib/increase/version.rb
index 4bab1d73..fec5d071 100644
--- a/lib/increase/version.rb
+++ b/lib/increase/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Increase
-  VERSION = "0.1.0-alpha.4"
+  VERSION = "0.1.0.pre.alpha.5"
 end
diff --git a/rbi/lib/increase/internal/page.rbi b/rbi/lib/increase/internal/page.rbi
index b563caba..7be81af9 100644
--- a/rbi/lib/increase/internal/page.rbi
+++ b/rbi/lib/increase/internal/page.rbi
@@ -3,10 +3,10 @@
 module Increase
   module Internal
     class Page
-      Elem = type_member
-
       include Increase::Internal::Type::BasePage
 
+      Elem = type_member
+
       sig { returns(T.nilable(T::Array[Elem])) }
       attr_accessor :data
 
diff --git a/rbi/lib/increase/internal/type/boolean_model.rbi b/rbi/lib/increase/internal/type/boolean.rbi
similarity index 97%
rename from rbi/lib/increase/internal/type/boolean_model.rbi
rename to rbi/lib/increase/internal/type/boolean.rbi
index 5949621a..e8f4eebc 100644
--- a/rbi/lib/increase/internal/type/boolean_model.rbi
+++ b/rbi/lib/increase/internal/type/boolean.rbi
@@ -6,7 +6,7 @@ module Increase
       # @api private
       #
       # Ruby has no Boolean class; this is something for models to refer to.
-      class BooleanModel
+      class Boolean
         extend Increase::Internal::Type::Converter
 
         abstract!
diff --git a/rbi/lib/increase/internal/util.rbi b/rbi/lib/increase/internal/util.rbi
index 755fb2b2..fe04005a 100644
--- a/rbi/lib/increase/internal/util.rbi
+++ b/rbi/lib/increase/internal/util.rbi
@@ -28,22 +28,22 @@ module Increase
         end
 
         # @api private
-        sig { params(input: T.anything).returns(T.any(T::Boolean, T.anything)) }
+        sig { params(input: T.any(String, T::Boolean)).returns(T.any(T::Boolean, T.anything)) }
         def coerce_boolean(input)
         end
 
         # @api private
-        sig { params(input: T.anything).returns(T.nilable(T::Boolean)) }
+        sig { params(input: T.any(String, T::Boolean)).returns(T.nilable(T::Boolean)) }
         def coerce_boolean!(input)
         end
 
         # @api private
-        sig { params(input: T.anything).returns(T.any(Integer, T.anything)) }
+        sig { params(input: T.any(String, Integer)).returns(T.any(Integer, T.anything)) }
         def coerce_integer(input)
         end
 
         # @api private
-        sig { params(input: T.anything).returns(T.any(Float, T.anything)) }
+        sig { params(input: T.any(String, Integer, Float)).returns(T.any(Float, T.anything)) }
         def coerce_float(input)
         end
 
@@ -271,7 +271,9 @@ module Increase
         # @api private
         #
         # https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream
-        sig { params(lines: T::Enumerable[String]).returns(Increase::Internal::Util::ServerSentEvent) }
+        sig do
+          params(lines: T::Enumerable[String]).returns(T::Enumerable[Increase::Internal::Util::ServerSentEvent])
+        end
         def decode_sse(lines)
         end
       end
diff --git a/sig/increase/internal/type/boolean_model.rbs b/sig/increase/internal/type/boolean.rbs
similarity index 94%
rename from sig/increase/internal/type/boolean_model.rbs
rename to sig/increase/internal/type/boolean.rbs
index 9e7b07c6..69767087 100644
--- a/sig/increase/internal/type/boolean_model.rbs
+++ b/sig/increase/internal/type/boolean.rbs
@@ -1,7 +1,7 @@
 module Increase
   module Internal
     module Type
-      class BooleanModel
+      class Boolean
         extend Increase::Internal::Type::Converter
 
         def self.===: (top other) -> bool
diff --git a/sig/increase/internal/util.rbs b/sig/increase/internal/util.rbs
index af854121..5afdd426 100644
--- a/sig/increase/internal/util.rbs
+++ b/sig/increase/internal/util.rbs
@@ -9,13 +9,13 @@ module Increase
 
       def self?.primitive?: (top input) -> bool
 
-      def self?.coerce_boolean: (top input) -> (bool | top)
+      def self?.coerce_boolean: (String | bool input) -> (bool | top)
 
-      def self?.coerce_boolean!: (top input) -> bool?
+      def self?.coerce_boolean!: (String | bool input) -> bool?
 
-      def self?.coerce_integer: (top input) -> (Integer | top)
+      def self?.coerce_integer: (String | Integer input) -> (Integer | top)
 
-      def self?.coerce_float: (top input) -> (Float | top)
+      def self?.coerce_float: (String | Integer | Float input) -> (Float | top)
 
       def self?.coerce_hash: (top input) -> (::Hash[top, top] | top)
 
@@ -133,7 +133,7 @@ module Increase
 
       def self?.decode_sse: (
         Enumerable[String] lines
-      ) -> Increase::Internal::Util::server_sent_event
+      ) -> Enumerable[Increase::Internal::Util::server_sent_event]
     end
   end
 end
diff --git a/test/increase/internal/type/base_model_test.rb b/test/increase/internal/type/base_model_test.rb
index bda9fbbf..c2106f58 100644
--- a/test/increase/internal/type/base_model_test.rb
+++ b/test/increase/internal/type/base_model_test.rb
@@ -22,7 +22,7 @@ class B < Increase::Internal::Type::BaseModel
   def test_typing
     converters = [
       Increase::Internal::Type::Unknown,
-      Increase::Internal::Type::BooleanModel,
+      Increase::Internal::Type::Boolean,
       A,
       H,
       E,
@@ -42,8 +42,8 @@ def test_coerce
       [Increase::Internal::Type::Unknown, :a] => [{yes: 1}, :a],
       [NilClass, :a] => [{maybe: 1}, nil],
       [NilClass, nil] => [{yes: 1}, nil],
-      [Increase::Internal::Type::BooleanModel, true] => [{yes: 1}, true],
-      [Increase::Internal::Type::BooleanModel, "true"] => [{no: 1}, "true"],
+      [Increase::Internal::Type::Boolean, true] => [{yes: 1}, true],
+      [Increase::Internal::Type::Boolean, "true"] => [{no: 1}, "true"],
       [Integer, 1] => [{yes: 1}, 1],
       [Integer, 1.0] => [{maybe: 1}, 1],
       [Integer, "1"] => [{maybe: 1}, 1],
@@ -85,8 +85,8 @@ def test_dump
       [String, B.new(a: "one", b: B.new(a: 1.0))] => {a: "one", b: {a: 1}},
       [:b, B.new(a: "one", b: B.new(a: 1.0))] => {a: "one", b: {a: 1}},
       [nil, B.new(a: "one", b: B.new(a: 1.0))] => {a: "one", b: {a: 1}},
-      [Increase::Internal::Type::BooleanModel, true] => true,
-      [Increase::Internal::Type::BooleanModel, "true"] => "true",
+      [Increase::Internal::Type::Boolean, true] => true,
+      [Increase::Internal::Type::Boolean, "true"] => "true",
       [Integer, "1"] => "1",
       [Float, 1] => 1,
       [String, "one"] => "one",
@@ -560,8 +560,8 @@ class M3 < M2
   def test_equality
     cases = {
       [Increase::Internal::Type::Unknown, Increase::Internal::Type::Unknown] => true,
-      [Increase::Internal::Type::BooleanModel, Increase::Internal::Type::BooleanModel] => true,
-      [Increase::Internal::Type::Unknown, Increase::Internal::Type::BooleanModel] => false,
+      [Increase::Internal::Type::Boolean, Increase::Internal::Type::Boolean] => true,
+      [Increase::Internal::Type::Unknown, Increase::Internal::Type::Boolean] => false,
       [E1, E2] => true,
       [E1, E3] => false,
       [M1, M2] => false,
diff --git a/test/increase/resources/physical_card_profiles_test.rb b/test/increase/resources/physical_card_profiles_test.rb
index 0bded181..84f36727 100644
--- a/test/increase/resources/physical_card_profiles_test.rb
+++ b/test/increase/resources/physical_card_profiles_test.rb
@@ -27,7 +27,7 @@ def test_create_required_params
         description: String,
         front_image_file_id: String | nil,
         idempotency_key: String | nil,
-        is_default: Increase::Internal::Type::BooleanModel,
+        is_default: Increase::Internal::Type::Boolean,
         status: Increase::Models::PhysicalCardProfile::Status,
         type: Increase::Models::PhysicalCardProfile::Type
       }
@@ -52,7 +52,7 @@ def test_retrieve
         description: String,
         front_image_file_id: String | nil,
         idempotency_key: String | nil,
-        is_default: Increase::Internal::Type::BooleanModel,
+        is_default: Increase::Internal::Type::Boolean,
         status: Increase::Models::PhysicalCardProfile::Status,
         type: Increase::Models::PhysicalCardProfile::Type
       }
@@ -84,7 +84,7 @@ def test_list
         description: String,
         front_image_file_id: String | nil,
         idempotency_key: String | nil,
-        is_default: Increase::Internal::Type::BooleanModel,
+        is_default: Increase::Internal::Type::Boolean,
         status: Increase::Models::PhysicalCardProfile::Status,
         type: Increase::Models::PhysicalCardProfile::Type
       }
@@ -109,7 +109,7 @@ def test_archive
         description: String,
         front_image_file_id: String | nil,
         idempotency_key: String | nil,
-        is_default: Increase::Internal::Type::BooleanModel,
+        is_default: Increase::Internal::Type::Boolean,
         status: Increase::Models::PhysicalCardProfile::Status,
         type: Increase::Models::PhysicalCardProfile::Type
       }
@@ -134,7 +134,7 @@ def test_clone_
         description: String,
         front_image_file_id: String | nil,
         idempotency_key: String | nil,
-        is_default: Increase::Internal::Type::BooleanModel,
+        is_default: Increase::Internal::Type::Boolean,
         status: Increase::Models::PhysicalCardProfile::Status,
         type: Increase::Models::PhysicalCardProfile::Type
       }
diff --git a/test/increase/resources/proof_of_authorization_request_submissions_test.rb b/test/increase/resources/proof_of_authorization_request_submissions_test.rb
index bf153a03..bb0a36fc 100644
--- a/test/increase/resources/proof_of_authorization_request_submissions_test.rb
+++ b/test/increase/resources/proof_of_authorization_request_submissions_test.rb
@@ -32,15 +32,15 @@ def test_create_required_params
         authorizer_ip_address: String | nil,
         authorizer_name: String | nil,
         created_at: Time,
-        customer_has_been_offboarded: Increase::Internal::Type::BooleanModel | nil,
+        customer_has_been_offboarded: Increase::Internal::Type::Boolean | nil,
         idempotency_key: String | nil,
         proof_of_authorization_request_id: String,
         status: Increase::Models::ProofOfAuthorizationRequestSubmission::Status,
         type: Increase::Models::ProofOfAuthorizationRequestSubmission::Type,
         updated_at: Time,
-        validated_account_ownership_via_credential: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_account_statement: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_microdeposit: Increase::Internal::Type::BooleanModel | nil
+        validated_account_ownership_via_credential: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_account_statement: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_microdeposit: Increase::Internal::Type::Boolean | nil
       }
     end
   end
@@ -66,15 +66,15 @@ def test_retrieve
         authorizer_ip_address: String | nil,
         authorizer_name: String | nil,
         created_at: Time,
-        customer_has_been_offboarded: Increase::Internal::Type::BooleanModel | nil,
+        customer_has_been_offboarded: Increase::Internal::Type::Boolean | nil,
         idempotency_key: String | nil,
         proof_of_authorization_request_id: String,
         status: Increase::Models::ProofOfAuthorizationRequestSubmission::Status,
         type: Increase::Models::ProofOfAuthorizationRequestSubmission::Type,
         updated_at: Time,
-        validated_account_ownership_via_credential: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_account_statement: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_microdeposit: Increase::Internal::Type::BooleanModel | nil
+        validated_account_ownership_via_credential: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_account_statement: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_microdeposit: Increase::Internal::Type::Boolean | nil
       }
     end
   end
@@ -104,15 +104,15 @@ def test_list
         authorizer_ip_address: String | nil,
         authorizer_name: String | nil,
         created_at: Time,
-        customer_has_been_offboarded: Increase::Internal::Type::BooleanModel | nil,
+        customer_has_been_offboarded: Increase::Internal::Type::Boolean | nil,
         idempotency_key: String | nil,
         proof_of_authorization_request_id: String,
         status: Increase::Models::ProofOfAuthorizationRequestSubmission::Status,
         type: Increase::Models::ProofOfAuthorizationRequestSubmission::Type,
         updated_at: Time,
-        validated_account_ownership_via_credential: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_account_statement: Increase::Internal::Type::BooleanModel | nil,
-        validated_account_ownership_with_microdeposit: Increase::Internal::Type::BooleanModel | nil
+        validated_account_ownership_via_credential: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_account_statement: Increase::Internal::Type::Boolean | nil,
+        validated_account_ownership_with_microdeposit: Increase::Internal::Type::Boolean | nil
       }
     end
   end